#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <set>
#include <tuple>
#include <fstream>

using namespace std;
signed main()
{
	ifstream in;
	in.open("crossword.in");
	ofstream out;
	out.open("crossword.out");
	int t;
	in >> t;
	while (t--)
	{
		int n;
		in >> n;
		vector<string> all;
		for (int i = 0; i < n; i++)
		{
			string s;
			in >> s;
			all.push_back(s);
		}
		out << all[0].size() << " " << 1 << "\n";
		for (auto i : all)
			out << i;
		out << "0 0 ";
		for (int i = 1; i < all[0].size(); i++)
			out << "R";
		out << "\n";
	}
}